Specifically the fractured track was a soldered joint that joined a track from 1989 with a new one from a few weeks ago.
English has a third term like that as well called 'brazing', then there is silver solder (a high temperature version of soldering), in dutch we'd call that 'hardsolderen', whereas what the English call brazing we call oxy-acetyleen lassen (which is more of a process name by virtue of naming the ingredients).
Soldadura autogeno and Soldadura en el arco (sp?) are what I think the modifiers used in Spanish to indicate brazing and (arc) welding.
In Germany it would be schweißen.
So, also different with different etymology in a language from a different group (although these things were probably influenced by German)
* the first one makes it clear a something (a different material) is used to join things together
* the second one implies you melt/boil the things to join them together